Diesel Giant,

It's time for you to do some homework. Freeze 12 consists of mostly 134, and another refrigerant that I don't recall. You can find this in one of the EPA documents.

Here is a link for you: http://www.macsw.org/macs.asp?mfurl=certify.html

After clicking on the link, download the Self Study Certification and training manual and go to page 23. It indicates Freeze 12 to be 80% 134 and 20% 142B. I have seen somewhere else in the past where it was a small portion of a flammable like isobutane, but it is not shown that way in this chart. There may be more than one blender of the stuff.

As a friendly recommendation, doing a little research for facts before making such statements as you have made in this thread will save you some embarrassment.

Have a great day,